Numerical Simulation of Hydraulic Fracturing Process in Mixed Ground

Authors

J. Wang, Tongji UniversityFollow
Yang Deng, Montclair State UniversityFollow
X. Liu, CCCC Key Laboratory of Environment Protection and Safety in Foundation Engineering of TransportationFollow
H. Peng, East China Architectural Design and Research Institute
Y. Yin, Tongji UniversityFollow
L. Wu, Tongji University
Z. Wu, East China Architectural Design and Research Institute

Document Type

Conference Proceeding

Publication Date

1-1-2017

Abstract

The crack initiation and propagation process of hydraulic fracturing were reproduced using a coupled particle flow code (PFC) computational fluid dynamics (CFD) method in mixed ground. The breakdown pressure of mixed ground was investigated based on orthogonal test principles and five influencing factors were analysed. The crack propagation process in mixed ground was investigated under different normal bond strength ratios between hard and soft grounds and stress ratio. The minimum principal stress has the most influence on breakdown pressure, followed by stress ratio. Stress ratio was the determining factor for crack initiation direction. The result can be used in the engineering design of hydraulic fracturing projects.

MSU Digital Commons Citation

Wang, J.; Deng, Yang; Liu, X.; Peng, H.; Yin, Y.; Wu, L.; and Wu, Z., "Numerical Simulation of Hydraulic Fracturing Process in Mixed Ground" (2017). Department of Earth and Environmental Studies Faculty Scholarship and Creative Works. 450.
https://digitalcommons.montclair.edu/earth-environ-studies-facpubs/450